Average GPS coordinates for Sekiyama Postcode location: 37.199, 140.338. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Sekiyama on map:

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Listing cities & postcodes (1):
>> Fukushimaken, 969-0204 Sekiyama, Nishishirakawagunyabukimachi, GPS coordinates: 37.1986,140.338